Container ferrule



March l, 1938. Q 'l'- WALTER 2,109,601 I CONTAINER FERRULE Filed May 28, 1936 ales Z' W1 Iter INVENTOR ATTORNEY Patented Mar. 1, 1938 UNITED STATES PATENT OFFICE I Applitlon Mary 2s, 1936, Serial N0.A 82,268

invention relates to metal ferrules for joining one ber member to another. More specically the invention is directed to a metal ferrule adapted to secure a ber disc to a ber closed in my prior patents are both ferrules of a` toothed or pronged type, having a ange which is swedged over the outer edge of the ber side Walls of the container.

The ferrule of the present invention involves a considerable saving in metal by providing a toothed or pronged ange.

Attention is called to the accompanying drawing in which similar reference characters in the several gures indicate similar parts.

Figure 1 shows a portion of a metal strip which has been cut into a plurality of complementary ferrules.

Figure 2 is a plan view of a single ferrule.

Figure 3 is a fragmentary view, partly in section, showing the end of a container to which the ferrule of the present invention has been applied.

Figure 4 is a fragmentary plan view of the top of a container to which the ferrule of the present invention has been applied.

Figure 5 is a perspective view of a finished container employing the ferrule of the present instrength. Each tooth 2 may be considered as comprising a base 3, a shaft or median portion 4, and a point 5 terminating in a tip 6. Base 3, shaft l, and point 5 are equal in length. 'Ihe longest dimension of base 3 is twice as great as the width of shaft I and the sloping sides 1 and I of base 3 are parallel respectiYely with sides 9 and Il, extended, of point 5. An Imaginary iine drawn through tip 6 at right angles to sides II and I2 of shaft I, extended, forms with each of the sides 9 and I0 of point 5 an angle of 52 20'.A Consequently, sides 9 and Il of point 5 form at tip 6 an angle of 75 .20'. This angle forms a tip 5 which is sharp enough to readily pierce the ber disc I3 and yet which is blunt enough to resist distortion when forced into disc I3. The teeth thus shown and described will be seen to be identical in structure to the teeth` described and claimed in my said Patent No. 2,060,542.` l y,

` When the ferrule is in position on the nished container, only the teeth 2 along one side of the ferrule are in contact with the disc I3. The base 3 lies at upon the outside surface ofthe disc. The shaft I passes through the berand the points 5 are .clinched back flat against the inside surface of disc I3 such that each point is positioned directly opposite its base.

As will be noted in Figure 5, ber disc I3vis slightly less in diameter than the inside diameter of container Il. This permits a disc with ferrule I attached thereto to slip easily into position. After the disc is thus slipped into position, the teeth 2 on the opposite side ofv the ferrule are swedged over the edges of the can body. During the swedging operation, the edges of the can body are forced into contact with the edge of disc thereby forming a substantial seal.

In Figure 7 a modied form of the ferrule of the present invention is shown. In this modification, the teeth 2 are of the structure which has been described, whereas the teeth I5 on the opposite side of the ferrule are of a rounded contour. When this modied form is used, the teeth 2 are aixed to the disc and the teeth I5 are swedged over the edges of the container body. It will be noted that the structure of the modied form of Figure 7 is suchvthat a plurality of ferrules may be stamped from a single sheet of metal.

In both types of theferrule a saving of metal is effected since the flanged portion of two ferrules may be formed from the metal which would be employed in forming the ange of a single ferrule of the type disclosed in my prior patents. Furthermore, the individual teeth of the ange may be more effectively clinched into the sides of the container body than is the case with a continuous straight edged ange.

I claim:

1. In combination with a container including a fibrous body and end wall, a ferrule blank oomprislng a strip provided along both edges thereof with a plurality of prongs, the strip being bent intermediate its edges to provide the prongs along one edge thereof extending inwardly from the inner fall of the container body for securing the end wall and the prongs along the other edge thereof extending adjacent the inner wall of the container body for securing the end of the container body, the teeth extending inwardly from the inner wall having blunt pointed tips and being bent intermediate their ends and clinched through the end wall, the teeth adjacent the inner wall being bent intermediate their ends over the end edge and against the outer wall of the container body. 2. In combination with a container including a brous body and end wall, a ferrule blank comprising a strip provided along both edges thereof with a plurality of teeth, the strip being bent intermediate its edges to provide the teeth along one edge thereof extending inwardly from the inner wall of the container body for securing the endwalland theteeth alongtheotheredge thereof extending adjacent the inner wall of the container body for securing the end of the container body, the teeth adjacent the inner wall being bent over the end edge and against the outer wall of the container body.

3. In combination with a container including a fibrous body and end wall, a ferrule blank comprising a strip provided along both edges thereof with a plurality of teeth, the teeth of oppomte edges being arranged in staggered relation, the strip being bent intermediate its edges to provide the teeth along one edge thereof extending inwardlyfrom the inner wall of the container body for securing the end wall and the teeth along the other edge thereof extending adjacent the inner wall of the container body for `ecuring the end of the container body, the teeth adjacent the inner wall being bent over the end edge and against the outer wall of the container body. 4. In combination with a container including a iibrous body and end wall, a ferrule blank comprising a strip provided along both edges thereof with a plurality of teeth having blunt pointed tips, theteethoi oppositeedgesbeingarranged in staggered relation, the stx-ip being bent intermediate its edges to provide the teeth along one edge thereof extending inwardly from the inner wall of the container body forsecuring the endwallandtheteethalongtheotheredge thereof extending adjacent the inner will of the containerbodyforsecuring theend ofthe containerbody,theteethadjacenttheinnerwall being bent over .the end edge and against the outer wall ofthe container body, the pointed tips of the last-mentioned teeth being secured within the outer wall o! the container body.

5. In combination with a container including anbrous bodyand endwalLafernileblankcomprising a strip provided along both edges thereof with a plurality of teeth having blunt'pointed tips, the teeth of opposite edgesbeing arranged in staggered relation, the strip being bent intermediate its edges to provide theteeth along one edge thereof extending inwardly from the inner wall of the container body and the teeth along the other edge thereof extending adjacent e inner wall of the container body, the teeth extending inwardly from the inner wall being ben intermediate their ends and clinched through th end walLthe teeth adjacenttheinnerwallbeing bent intermediate their ends over the end edge and against the outer wall of the container body. the pointed tips of the last-mentioned teeth being clinched within the outer wall ofthe container body.

v CHARLES T. WALTER. 

